/****************************************************************************
* [url=home.php?mod=space&uid=288409]@file[/url] main.c
* [url=home.php?mod=space&uid=895143]@version[/url] V2.00
* $Revision: 2 $
* $Date: 14/12/25 10:24a $
* @brief
* Transmit and receive data with auto flow control.
* This sample code needs to work with UART_Autoflow_Slave.
* @note
* Copyright (C) 2014 Nuvoton Technology Corp. All rights reserved.
*
******************************************************************************/
#include <stdio.h>
#include "M0518.h"
#define PLL_CLOCK 50000000
#define RXBUFSIZE 1024
/*---------------------------------------------------------------------------------------------------------*/
/* Define functions prototype */
/*---------------------------------------------------------------------------------------------------------*/
extern char GetChar(void);
int32_t main(void);
void AutoFlow_FunctionTxTest(void);
void SYS_Init(void)
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init System Clock */
/*---------------------------------------------------------------------------------------------------------*/
/* Enable Internal RC 22.1184MHz clock */
CLK_EnableXtalRC(CLK_PWRCON_OSC22M_EN_Msk);
/* Waiting for Internal RC clock ready */
CLK_WaitClockReady(CLK_CLKSTATUS_OSC22M_STB_Msk);
/* Switch HCLK clock source to Internal RC and HCLK source divide 1 */
CLK_SetHCLK(CLK_CLKSEL0_HCLK_S_HIRC, CLK_CLKDIV_HCLK(1));
/* Enable external XTAL 12MHz clock */
CLK_EnableXtalRC(CLK_PWRCON_XTL12M_EN_Msk);
/* Waiting for external XTAL clock ready */
CLK_WaitClockReady(CLK_CLKSTATUS_XTL12M_STB_Msk);
/* Set core clock as PLL_CLOCK from PLL */
CLK_SetCoreClock(PLL_CLOCK);
/* Enable UART module clock */
CLK_EnableModuleClock(UART0_MODULE);
CLK_EnableModuleClock(UART1_MODULE);
/* Select UART module clock source */
CLK_SetModuleClock(UART0_MODULE, CLK_CLKSEL1_UART_S_HXT, CLK_CLKDIV_UART(1));
CLK_SetModuleClock(UART1_MODULE, CLK_CLKSEL1_UART_S_HXT, CLK_CLKDIV_UART(1));
/*---------------------------------------------------------------------------------------------------------*/
/* Init I/O Multi-function */
/*---------------------------------------------------------------------------------------------------------*/
/* Set GPB multi-function pins for UART0 RXD and TXD */
/* Set GPB multi-function pins for UART1 RXD, TXD, nRTS and nCTS */
SYS->GPB_MFP &= ~(SYS_GPB_MFP_PB0_Msk | SYS_GPB_MFP_PB1_Msk |
SYS_GPB_MFP_PB4_Msk | SYS_GPB_MFP_PB5_Msk |
SYS_GPB_MFP_PB6_Msk | SYS_GPB_MFP_PB7_Msk);
SYS->GPB_MFP |= (SYS_GPB_MFP_PB0_UART0_RXD | SYS_GPB_MFP_PB1_UART0_TXD |
SYS_GPB_MFP_PB4_UART1_RXD | SYS_GPB_MFP_PB5_UART1_TXD |
SYS_GPB_MFP_PB6_UART1_nRTS | SYS_GPB_MFP_PB7_UART1_nCTS);
}
void UART0_Init()
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init UART */
/*---------------------------------------------------------------------------------------------------------*/
/* Reset UART0 module */
SYS_ResetModule(UART0_RST);
/* Configure UART0 and set UART0 Baudrate */
UART_Open(UART0, 115200);
}
void UART1_Init()
{
/*---------------------------------------------------------------------------------------------------------*/
/* Init UART */
/*---------------------------------------------------------------------------------------------------------*/
/* Reset UART1 module */
SYS_ResetModule(UART1_RST);
/* Configure UART1 and set UART1 Baudrate */
UART_Open(UART1, 115200);
}
/*---------------------------------------------------------------------------------------------------------*/
/* MAIN function */
/*---------------------------------------------------------------------------------------------------------*/
int main(void)
{
/* Unlock protected registers */
SYS_UnlockReg();
/* Init System, IP clock and multi-function I/O */
SYS_Init();
/* Lock protected registers */
SYS_LockReg();
/* Init UART0 for printf */
UART0_Init();
/* Init UART1 for testing */
UART1_Init();
/*---------------------------------------------------------------------------------------------------------*/
/* SAMPLE CODE */
/*---------------------------------------------------------------------------------------------------------*/
printf("\n\nCPU [url=home.php?mod=space&uid=72445]@[/url] %dHz\n", SystemCoreClock);
printf("\n\nUART Sample Program\n");
/* UART auto flow sample master function */
AutoFlow_FunctionTxTest();
while(1);
}
/*---------------------------------------------------------------------------------------------------------*/
/* AutoFlow Function Tx Test */
/*---------------------------------------------------------------------------------------------------------*/
void AutoFlow_FunctionTxTest()
{
uint32_t u32i;
printf("\n");
printf("+-----------------------------------------------------------+\n");
printf("| Pin Configure |\n");
printf("+-----------------------------------------------------------+\n");
printf("| ______ _____ |\n");
printf("| | | | | |\n");
printf("| |Master|--UART1_TXD(PB.5) <==> UART1_RXD(PB.4)--|Slave| |\n");
printf("| | |--UART1_nCTS(PB.7) <==> UART1_nRTS(PB.6)--| | |\n");
printf("| |______| |_____| |\n");
printf("| |\n");
printf("+-----------------------------------------------------------+\n");
printf("\n");
printf("+-----------------------------------------------------------+\n");
printf("| AutoFlow Function Test (Master) |\n");
printf("+-----------------------------------------------------------+\n");
printf("| Description : |\n");
printf("| The sample code needs two boards. One is Master and |\n");
printf("| the other is slave. Master will send 1k bytes data |\n");
printf("| to slave.Slave will check if received data is correct |\n");
printf("| after getting 1k bytes data. |\n");
printf("| Press any key to start... |\n");
printf("+-----------------------------------------------------------+\n");
GetChar();
/* Enable RTS and CTS autoflow control */
UART_EnableFlowCtrl(UART1);
/* Send 1k bytes data */
for(u32i = 0; u32i < RXBUFSIZE; u32i++)
{
/* Send 1 byte data */
UART_WRITE(UART1, u32i & 0xFF);
/* Wait if Tx FIFO is full */
while(UART_IS_TX_FULL(UART1));
}
printf("\n Transmit Done\n");
}
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